Results 21 to 30 of about 14,335,537 (251)

Experimental comparison of sinusoidal motion and non-sinusoidal motion of rise-dwell-fall-dwell in a Stirling engine

open access: yesJournal of Mechanical Engineering and Sciences, 2020
The Stirling engine is deemed to play a role in the near future of power generation. However, there is a large performance difference between the real and ideal Stirling engine.
H.M. Wong, S.Y. Goh
doaj   +1 more source

THE EFFICIENCY IMPROVEMENT OF A MULTIPHASE POWER SUPPLY SYSTEM BY USING ENERGY-SAVING SHUNT ACTIVE FILTRATION STRATEGIES

open access: yesТехнічна електродинаміка, 2022
Minimizing energy losses and increasing the efficiency of a multiphase power supply system by increasing the load power factor using an active shunt filter (SAF) is analyzed.
М.Ю. Артеменко   +4 more
doaj   +1 more source

Analysis of Electric Power Quantities of Road LED Luminaires under Sinusoidal and Non-Sinusoidal Conditions

open access: yesEnergies, 2019
The paper presents the results of laboratory tests concerning the measurements of electrical parameters of road lighting luminaires. These measurements were focused on determining the dependence of the electrical parameters of the luminaires versus the ...
Roman Sikora, Przemysław Markiewicz
doaj   +1 more source

AC losses in HTS coils for high-frequency and non-sinusoidal currents [PDF]

open access: yes, 2017
AC losses in racetrack coils that are wound of YBCO tapes are measured for sinusoidal and non-sinusoidal transport currents with fundamental frequencies up to 1 kHz. An electrical method to measure losses for non-sinusoidal currents is developed for this
Bruyn, BJH Bart de   +9 more
core   +2 more sources

A Self-Learning Solution for Torque Ripple Reduction for Non-Sinusoidal Permanent Magnet Motor Drives Based on Artificial Neural Networks [PDF]

open access: yes, 2013
This paper presents an original method, based on artificial neural networks, to reduce the torque ripple in a permanent-magnet non-sinusoidal synchronous motor.
WIRA, Patrick   +7 more
core   +1 more source

Relationship between Buchholz’s Apparent Power and Instantaneous Power in Three-Phase Systems

open access: yesApplied Sciences, 2020
Similarly to how Steinmetz developed his theory of alternating current in single-phase sinusoidal systems, a few formal relationships between expressions of the instantaneous and Buchholz’s apparent power in three-phase systems were identified in ...
Vicente León-Martínez   +3 more
doaj   +1 more source

Benchmarking Online Electric Power Computation Techniques in Non-Sinusoidal Environments

open access: yes, 2023
The majority of technological advancements associated with the electrical grid, and particularly the increasing use of non-linear loads and power electronics in the distribution network, a weak network, challenge the fundamental assumption that voltages ...
Raja Ayyanar (10893767)   +3 more
core   +1 more source

A Signal Theory of Instantaneous and Average Power

open access: yesIEEE Access
In this paper the standard formulas for instantaneous and average power in sinusoidal systems are generalized to non-sinusoidal systems by appealing to the Hilbert Transform and Bedrosian’s Theorem for a general class of non-sinusoidal currents ...
Dongliang Duan, Louis L. Scharf
doaj   +1 more source

Numerical Study on the Effect of Non-Sinusoidal Motion on the Energy Extraction Performance of Parallel Foils

open access: yesApplied Sciences, 2019
The effect of non-sinusoidal motion which influences the energy extraction performance of foil is considered in this paper. Two oscillation motions, the combined non-sinusoidal plunging and sinusoidal pitching motion, as well as the combined non ...
Yulu Wang, Fahui Zhu, Yonghui Xie
doaj   +1 more source

Vector Geometric Algebra in Power Systems: An Updated Formulation of Apparent Power under Non-Sinusoidal Conditions

open access: yesMathematics, 2021
Traditional electrical power theories and one of their most important concepts—apparent power—are still a source of debate, because they present several flaws that misinterpret the power-transfer and energy-balance phenomena under distorted grid ...
Francisco G. Montoya   +4 more
doaj   +1 more source

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